/*******************************************************************************
  Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
 
  (c) Copyright 1996 - 2003 Gary Henderson (gary.henderson@ntlworld.com) and
                            Jerremy Koot (jkoot@snes9x.com)

  (c) Copyright 2002 - 2003 Matthew Kendora and
                            Brad Jorsch (anomie@users.sourceforge.net)
 

                      
  C4 x86 assembler and some C emulation code
  (c) Copyright 2000 - 2003 zsKnight (zsknight@zsnes.com),
                            _Demo_ (_demo_@zsnes.com), and
                            Nach (n-a-c-h@users.sourceforge.net)
                                          
  C4 C++ code
  (c) Copyright 2003 Brad Jorsch

  DSP-1 emulator code
  (c) Copyright 1998 - 2003 Ivar (ivar@snes9x.com), _Demo_, Gary Henderson,
                            John Weidman (jweidman@slip.net),
                            neviksti (neviksti@hotmail.com), and
                            Kris Bleakley (stinkfish@bigpond.com)
 
  DSP-2 emulator code
  (c) Copyright 2003 Kris Bleakley, John Weidman, neviksti, Matthew Kendora, and
                     Lord Nightmare (lord_nightmare@users.sourceforge.net

  OBC1 emulator code
  (c) Copyright 2001 - 2003 zsKnight, pagefault (pagefault@zsnes.com)
  Ported from x86 assembler to C by sanmaiwashi

  SPC7110 and RTC C++ emulator code
  (c) Copyright 2002 Matthew Kendora with research by
                     zsKnight, John Weidman, and Dark Force

  S-RTC C emulator code
  (c) Copyright 2001 John Weidman
  
  Super FX x86 assembler emulator code 
  (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault 

  Super FX C emulator code 
  (c) Copyright 1997 - 1999 Ivar and Gary Henderson.



 
  Specific ports contains the works of other authors. See headers in
  individual files.
 
  Snes9x homepage: http://www.snes9x.com
 
  Permission to use, copy, modify and distribute Snes9x in both binary and
  source form, for non-commercial purposes, is hereby granted without fee,
  providing that this license information and copyright notice appear with
  all copies and any derived work.
 
  This software is provided 'as-is', without any express or implied
  warranty. In no event shall the authors be held liable for any damages
  arising from the use of this software.
 
  Snes9x is freeware for PERSONAL USE only. Commercial users should
  seek permission of the copyright holders first. Commercial use includes
  charging money for Snes9x or software derived from Snes9x.
 
  The copyright holders request that bug fixes and improvements to the code
  should be forwarded to them so everyone can benefit from the modifications
  in future versions.
 
  Super NES and Super Nintendo Entertainment System are trademarks of
  Nintendo Co., Limited and its subsidiary companies.
*******************************************************************************/

#ifndef _DSP1_H_
#define _DSP1_H_

extern void (*SetDSP)(uint8, uint16);
extern uint8 (*GetDSP)(uint16);

void DSP1SetByte(uint8 byte, uint16 address);
uint8 DSP1GetByte(uint16 address);

void DSP2SetByte(uint8 byte, uint16 address);
uint8 DSP2GetByte(uint16 address);

void DSP3SetByte(uint8 byte, uint16 address);
uint8 DSP3GetByte(uint16 address);

void DSP4SetByte(uint8 byte, uint16 address);
uint8 DSP4GetByte(uint16 address);


// Simple vector and matrix types
typedef double MATRIX[3][3];
typedef double VECTOR[3];

enum AttitudeMatrix { MatrixA, MatrixB, MatrixC };

struct SDSP1 {
	uint32 in_count;
	uint32 in_index;
	uint32 out_count;
    uint32 out_index;
    bool8 waiting4command;
    bool8 first_parameter;
    uint8 command;
    uint8 parameters [512];
//output was 512 for DSP-2 work, updated to reflect current thinking on DSP-3
    uint8 output [512];

    // Attitude matrices
    MATRIX vMa;
    MATRIX vMb;
    MATRIX vMc;
    
    // Matrix and translaton vector for
    // transforming a 3D position into the global coordinate system,
    // from the view space coordinate system.
    MATRIX vM;
    VECTOR vT;

    // Focal distance
    double vFov;

    // A precalculated value for optimization
    double vPlaneD;
    
    // Raster position of horizon
    double vHorizon;

    // Convert a 2D screen coordinate to a 3D ground coordinate in global coordinate system.
    void ScreenToGround(VECTOR &v, double X2d, double Y2d);

    MATRIX &GetMatrix( AttitudeMatrix Matrix );
};

///////////////// DSP Commands ////////////////////

// DSP1 Command 02h
struct DSP1_Parameter
{
    DSP1_Parameter( int16 Fx, int16 Fy, int16 Fz,
		      uint16 Lfe, uint16 Les,
		      int8 Aas, int8 Azs );

    // Raster number of imaginary center
    int16 Vof;	// -32768 ~ +32767

    // Raster number representing
    // horizontal line.
    int16 Vva;	// -32768 ~ +32767

    // X,Y coordinate of the point
    // projected on the center of the screen
    // (ground coordinate)
    int16 Cx;	// -32768 ~ +32767
    int16 Cy;	// -32768 ~ +32767
};

// DSP1 Command 0Ah
struct DSP1_Raster
{
    DSP1_Raster( int16 Vs );

    // Linear transformation matrix elements
    // for each raster
    int16 An;
    int16 Bn;
    int16 Cn;
    int16 Dn;
};

// DSP1 Command 06h
struct DSP1_Project
{
    DSP1_Project( int16 x, int16 y, int16 z );

    int16 H;
    int16 V;
    int16 M;
};

// DSP1 Command 0Eh
struct DSP1_Target
{
    DSP1_Target( int16 h, int16 v );

    int16 X;
    int16 Y;
};

// DSP1 Command 04h
struct DSP1_Triangle
{
    DSP1_Triangle (int16 Theta, int16 r );
    int16 S;
    int16 C;
};

// DSP1 Command 08h
struct DSP1_Radius
{
    DSP1_Radius( int16 x, int16 y, int16 z );
    int16 Ll;
    int16 Lh;
};

// DSP1 Command 18h
int16 DSP1_Range( int16 x, int16 y, int16 z, int16 r );

// DSP1 Command 28h
int16 DSP1_Distance( int16 x, int16 y, int16 z );

// DSP1 Command 0Ch
struct DSP1_Rotate
{
    DSP1_Rotate (int16 A, int16 x1, int16 y1);

    int16 x2;
    int16 y2;
};

// DSP1 Command 1Ch
struct DSP1_Polar
{
    DSP1_Polar( int8 Za, int8 Xa, int8 Ya, int16 x, int16 y, int16 z );

    int16 X;
    int16 Y;
    int16 Z;
};

// DSP1 Command 01h, 11h and 21h
void DSP1_Attitude( int16 m, int8 Za, int8 Xa, int8 Ya, AttitudeMatrix Matrix );

// DSP1 Command 0Dh, 1Dh and 2Dh
struct DSP1_Objective
{
    DSP1_Objective( int16 x, int16 y, int16 z, AttitudeMatrix Matrix );

    int16 F;
    int16 L;
    int16 U;
};

// DSP1 Command 03h, 13h and 23h
struct DSP1_Subjective
{
    DSP1_Subjective( int16 F, int16 L, int16 U, AttitudeMatrix Matrix );

    int16 X;
    int16 Y;
    int16 Z;
};

// DSP1 Command 0Bh, 1Bh and 2Bh
int16 DSP1_Scalar( int16 x, int16 y, int16 z, AttitudeMatrix Matrix );

// DSP1 Command 14h
struct DSP1_Gyrate
{
    DSP1_Gyrate( int8 Zi, int8 Xi, int8 Yi,
		 int8 dU, int8 dF, int8 dL );

    int8 Z0;
    int8 X0;
    int8 Y0;
};

// DSP1 Command 00h
int16 DSP1_Multiply( int16 k, int16 I );

// DSP1 Command 10h
struct DSP1_Inverse
{
    DSP1_Inverse( int16 a, int16 b );

    int16 A;
    int16 B;
};

START_EXTERN_C
void S9xResetDSP1 ();
uint8 S9xGetDSP (uint16 Address);
void S9xSetDSP (uint8 Byte, uint16 Address);

extern struct SDSP1 DSP1;
END_EXTERN_C

#endif
